CN110017122A - Long well section gravel pack completion tubing string and process - Google Patents
Long well section gravel pack completion tubing string and process Download PDFInfo
- Publication number
- CN110017122A CN110017122A CN201910381756.8A CN201910381756A CN110017122A CN 110017122 A CN110017122 A CN 110017122A CN 201910381756 A CN201910381756 A CN 201910381756A CN 110017122 A CN110017122 A CN 110017122A
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- China
- Prior art keywords
- tube body
- well section
- hole
- gravel
- tubing string
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
Abstract
The invention discloses a kind of long well section gravel pack completion tubing string and process, belong to the completion technique field in oil-gas field development.The tubing string includes: rod string (1), suspension assembly (2), check valve (3), sand retention pipe (4), oscillation component (5) and guide part (6), suspension assembly (2) is sequentially connected including the first tube body (21), rod string (1), the second tube body (22), oscillation component (5), and oscillation component (5) is vibrated for liquid when passing through out of it；First tube body (21), sand retention pipe (4), guide part (6) are sequentially connected.The long well section gravel pack completion tubing string utilizes the oscillation action of oscillation component (5), has substantially ensured the compactness of long well section gravel packing zone (7), has improved long well section gravel packing effectiveness, ensure that sand control completion efficiency.
Description
Technical field
The present invention relates to the completion technique field in oil-gas field development, in particular to a kind of long well section gravel pack completion pipe
Column and process.
Background technique
Horizontal well open-hole gravel pack technology is as more advanced one of sand control technique, it has also become loose sand oil accumulation is horizontal
The leading technology technology of well.The technology may insure that net horizontal section possesses maximum drainage area, effectively play sand control work
With, and provide strong support to the borehole wall, the long-term Efficient Development of oil well may be implemented.
Currently, being more than the net horizontal section of 300m for length, generallys use the mode generally filled and gravel is filled to gravel
In stone filling layer.And due to not considering gravel deposition can occur in stowing operation for this kind of filling method, so that filling mouth
The problem of vulnerable to blocking, thus easily lead to and fill leakiness between screen casing and the borehole wall, it cannot achieve high efficiency filling, finally make
It fails at sand control.
Summary of the invention
In consideration of it, the present invention provides a kind of long well section gravel pack completion tubing string and process, to improve long well section gravel
Stone pack effectiveness guarantees sand control completion effect.
Specifically, including technical solution below:
In a first aspect, providing a kind of long well section gravel pack completion tubing string, the tubing string includes: rod string, suspension group
Part, check valve, sand retention pipe, oscillation component and guide part, wherein
The suspension assembly includes the first tube body, the second tube body, the first connecting tube, annular closeouts and multiple annular occlusions
Tooth；Second tube body is located in first tube body, is formed with the first ring between second tube body and first tube body
Shape space, the annular closeouts are located in the first annular space, and the side for blocking the first annular space；
Step is provided in second tube body, corresponding to the position of the second tube body corresponding to the step and the annular closeouts
The second tube body position between second tube body on offer first through hole, the first through hole with it is described first annular
Space connection；Second tube body, which is located on side of the step far from the annular closeouts, offers the second through-hole, institute
The third through-hole for offering on the first tube body and being connected to gravel packing zone is stated, first connecting tube is located at the first annular sky
In, and for being connected to second through-hole and the third through-hole；The multiple annular tooth engaged setting is in first pipe
On the outer tube wall of body；
The rod string is connected with one end of second tube body, the other end and the oscillation component of second tube body
It is connected, the oscillation component is vibrated for liquid when passing through out of it；The check valve is arranged in second tube body
It is interior, and be suitable for cooperating with the step；
First tube body is connected with one end of the sand retention pipe, the other end of the sand retention pipe and the guide part phase
Even；The second annular space is formed between the sand retention pipe, the guide part and the oscillation component, is offered on the sand retention pipe
Multiple fluid holes, the fluid hole is for being connected to the gravel packing zone and second annular space；
When the tubing string is configured with, the multiple annular tooth engaged is connected with the cooperation of the inner wall of casing, the list
It is set on the step to valve, the third annular space between the first annular space and described sleeve pipe and the rod string
Connection.
Optionally, the check valve is fixed in second tube body by shear pin；
The shear pin is located at the side of second through-hole far from the step.
Optionally, the oscillation component includes multiple oscillating tubes and multiple second connecting tubes；
It is connected between two adjacent oscillating tubes by second connecting tube.
Optionally, axially eccentric blade is provided in each oscillating tube, the axially eccentric blade is passed through for liquid
It crosses and the tube body of the oscillating tube is driven to vibrate at that time.
Optionally, the sand retention pipe includes multiple sand block pipes and multiple third connecting tubes；
It is connected between the sub- pipe of sand block of adjacent two by a third connecting tube；
The fluid hole is offered on each sub- pipe of the sand block.
Optionally, the number of the first through hole is three；
Three upper first through hole are uniformly provided with the ring week of second tube body；
Optionally, the number of second through-hole, the third through-hole and first connecting tube is three；
Three second through-holes are uniformly provided with the ring week of second tube body.
Optionally, the value range in each fluid hole aperture is 0.15-0.2mm.
Second aspect, provides a kind of process of long well section gravel pack completion, and the method is applied to first party
The described in any item long well section gravel pack completion tubing strings in face, which comprises
The long well section gravel pack completion tubing string is lowered into net horizontal section to be filled；
It is suppressed into the rod string, the multiple annular tooth engaged is connected with the cooperation of the inner wall of described sleeve pipe, the list
It is set on the step to valve；
Mortar containing gravel is injected out of described rod string, to gravel packing zone progress gravel filling, and
The liquid of ground recycling reflux；
When the pressure in the rod string is gradually increasing, stop injecting the sand containing gravel into the rod string
Slurry.
Optionally, when the pressure when in the rod string is gradually increasing, stop into the rod string described in injection
After mortar containing gravel, the method also includes:
The rod string is above mentioned, the rod string, second tube body and the oscillation component are played into producing well.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
The long well section gravel pack completion tubing string of the embodiment of the present invention, including rod string, suspension assembly, check valve, sand block
Pipe, oscillation component and guide part.The suspension assembly includes the first tube body, the second tube body, the first connecting tube, annular closeouts and more
A annular tooth engaged；Rod string, the second tube body and oscillation component are sequentially connected, hair when oscillation component passes through in it for liquid
Raw vibration；First tube body, sand retention pipe are connected with guide part.Water to be filled is lowered into the long well section gravel pack completion tubing string
It after horizontal well section, is suppressed into rod string, so that the inner wall cooperation of multiple annular tooth engaged and casings is connected, check valve is set the
On the step being provided in two tube bodies；The mortar containing gravel is injected out of rod string again, the mortar containing gravel passes through brill
Bar string, the second through-hole, the first connecting tube and third through-hole, enter in gravel packing zone, carry out gravel to gravel packing zone and fill
It fills out, and simultaneously, the liquid in mortar can be entered by the fluid hole on sand retention pipe by sand retention pipe, guide part and oscillation component
In the second annular space formed, and when by the inside of oscillation component, it may make oscillation component that tubing string is driven to vibrate,
Prevent gravel from deposition occurring in stowing operation, so that gravel packing zone filling is closely knit, and then liquid is again from first through hole
It enters in the first annular space between the first tube body and the second tube body, is flowed into again from first annular space by casing and brill
In the third annular space that bar string is constituted, is returned by third annular space and be discharged to ground；When the pressure in rod string is gradually increasing
When, stop injecting the mortar containing gravel into rod string, terminates gravel filling.The long well section gravel pack completion tubing string utilizes
The oscillation action of oscillation component has substantially ensured the compactness of long well section gravel packing zone, improves long well section gravel filling effect
Rate ensure that sand control completion efficiency.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that a kind of long well section gravel pack completion tubing string provided in an embodiment of the present invention enters the structural schematic diagram after well；
Fig. 2 is structure when a kind of long well section gravel pack completion tubing string provided in an embodiment of the present invention is configured with
Schematic diagram；
Fig. 3 is that a kind of long well section gravel pack completion tubing string provided in an embodiment of the present invention completes the structure after gravel filling
Schematic diagram；
Fig. 4 is that a kind of long well section gravel pack completion tubing string provided in an embodiment of the present invention stays the well casing rod structure to illustrate
Figure；
Fig. 5 is a kind of flow chart of the process of long well section gravel pack completion provided in an embodiment of the present invention；
Fig. 6 is the flow chart of the process of another long well section gravel pack completion provided in an embodiment of the present invention.
Appended drawing reference in figure respectively indicates are as follows:
1- rod string,
2- suspension assembly,
The first tube body of 21-, 211- third through-hole,
The second tube body of 22-, 221- step, 222- first through hole, the second through-hole of 223-,
The first connecting tube of 23-,
24- annular closeouts,
25- annular tooth engaged,
The first annular space 26-,
3- check valve,
4- sand retention pipe, 41- fluid hole, 42- sand block sub- pipe, 43- third connecting tube,
5- oscillation component, 51- oscillating tube, the second connecting tube of 52-,
6- guide part,
7- gravel packing zone,
The second annular space of 8-,
9- casing,
10- third annular space,
11- oil reservoir.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
Currently, the net horizontal section that length is more than 300m can be defined as long well section.In order to realize that long well section gravel has filled
Well, the embodiment of the invention provides a kind of long well section gravel pack completion tubing strings, structural schematic diagram such as Fig. 1 institute after entering well
Show, comprising: rod string 1, suspension assembly 2, check valve 3, sand retention pipe 4, oscillation component 5 and guide part 6.
Wherein, suspension assembly 2 includes the first tube body 21, the second tube body 22, the first connecting tube 23, annular closeouts 24 and more
A annular tooth engaged 25.
Second tube body 22 is located in the first tube body 21, is formed with first annular sky between the second tube body 22 and the first tube body 21
Between 26, annular closeouts 24 are located in first annular space 26, and for blocking the side in first annular space 26.
Step 221, the position of the second tube body 22 corresponding to step 221 and annular closeouts are provided in second tube body 22
First through hole 222, first through hole 222 and are offered on the second tube body 22 between the position of second tube body 22 corresponding to 24
The connection of one annular space 26, allows first through hole 222 to provide channel with first annular space 26 for the reflux of liquid.
Second tube body 22, which is located on side of the step 221 far from annular closeouts 24, offers the second through-hole 223, the first pipe
The third through-hole 211 being connected to gravel packing zone 7 is offered on body 21, the first connecting tube 23 is located in first annular space 26,
And for being connected to the second through-hole 223 and third through-hole 211, so that the second through-hole 223, the first connecting tube 23 and third through-hole 211
Channel can be provided for being filled in gravel packing zone 7 for the mortar containing gravel.
Multiple annular tooth engageds 25 are arranged on the outer tube wall of the first tube body 21, and are suitable for cooperating with casing 9.
Rod string 1 is connected with one end of the second tube body 22, and the other end of the second tube body 22 is connected with oscillation component 5, also
It is to say, rod string 1, the second tube body 22 and oscillation component 5 are sequentially connected, and oscillation component 5 is used for liquid hair when passing through out of it
Raw vibration.
Check valve 3 is arranged in the second tube body 22, and is suitable for cooperating with step 221.
First tube body 21 is connected with one end of sand retention pipe 4, and the other end of sand retention pipe 4 is connected with guide part 6, that is to say, that
First tube body 21, sand retention pipe 4 and guide part 6 are sequentially connected.
The second annular space 8 is formed between sand retention pipe 4, guide part 6 and oscillation component 5, offered on sand retention pipe 4 it is multiple go out
Fluid apertures 41, fluid hole 41 pass through the liquid in mortar out for being connected to gravel packing zone 7 and the second annular space 8
Fluid apertures 41 enters in the second annular space 8, and is flowed into the inside of oscillation component 5, and oscillation component 5 is promoted to drive tubing string
Vibration.
It will be appreciated by persons skilled in the art that gravel packing zone 7 is exactly the ring formed between oil reservoir 11 and sand retention pipe 4
Shape space, as shown in Figure 3 or Figure 4.
As shown in Fig. 2, multiple annular tooth engageds 25 are connected with the cooperation of the inner wall of casing 9, single when tubing string is configured with
It is set on step 221 to valve 3, first annular space 26 is connected to the third annular space 10 between casing 9 and rod string 1.
The working principle of the long well section gravel pack completion tubing string of the embodiment of the present invention are as follows:
The long well section gravel pack completion tubing string of the embodiment of the present invention is lowered into net horizontal section to be filled, such as Fig. 1 institute
Show；
Then it is suppressed into rod string 1, so that multiple annular tooth engageds 25 are connected with the cooperation of the inner wall of casing 9, check valve 3
It sets on the step 221 being provided in the second tube body 22, as shown in Figure 2；
The mortar containing gravel is injected out of rod string 1 again, the mortar containing gravel passes through rod string 1, the second through-hole
223, the first connecting tube 23 and third through-hole 211, enter in gravel packing zone 7, carry out gravel filling to gravel packing zone 7,
And simultaneously, the liquid in mortar can be entered by the fluid hole 41 on sand retention pipe 4 by sand retention pipe 4, guide part 6 and set of oscillations
In the second annular space 8 that part 5 is formed, and when by the inside of oscillation component 5, oscillation component 5 may make to drive tubing string hair
Raw vibration, prevents gravel from deposition occurring in stowing operation so that gravel packing zone 7 fill it is closely knit, and then liquid again from
First through hole 222 enters in the first annular space 26 between the first tube body 21 and the second tube body 22, from first annular space
26 are flowed into again in the third annular space 10 being made of casing 9 and rod string 1, return by third annular space 10 and are discharged to ground
Face；
When the pressure in rod string 1 is gradually increasing, stops injecting the mortar containing gravel into rod string 1, terminate gravel
Stone filling.
Therefore, the long well section gravel pack completion tubing string of the embodiment of the present invention utilizes rod string 1, suspension assembly 2, check valve
3, the gravel pack completion of long well section may be implemented in sand retention pipe 4, oscillation component 5 and guide part 6, utilizes the oscillation of oscillation component 5
Effect, has substantially ensured the compactness of long well section gravel packing zone 7, has improved long well section gravel packing effectiveness, ensure that sand control
Complete well effect.
Explanation is further described through to the structure of the long well section gravel pack completion tubing string of the embodiment of the present invention below:
For rod string 1, rod string 1 is the structure for being connected by multiple drilling rods and being formed.
Optionally, rod string 1 can be connected through a screw thread with one end of the second tube body 22, be easily installed and dismantled.
For suspension assembly 2, suspension assembly 2 plays the role of connection and provides circulation passage, belongs to the present invention
The critical piece of the long well section gravel pack completion tubing string of embodiment.
In overall structure, suspension assembly 2 can be the double layered tubular knot being made of the first tube body 21 and the second tube body 22
Structure, as shown in Fig. 1 or Fig. 2 or Fig. 3.
In order to realize that tubing string after being lowered into net horizontal section to be filled, keeps its position relatively constant, needs to tubing string
It is fixed, thus multiple annular tooth engageds 25 is set on the outer tube wall of the first tube body 21, by under pressurization, so that
Multiple annular tooth engageds 25 can be mutually engaged with the inner wall of casing 9, and realization is fixedly linked, wherein Fig. 1 or Fig. 2 or Fig. 3 is multiple
Annular tooth engaged 25 is engaged the schematic diagram being fixed as one with the inner wall of casing 9.
Optionally, the cross-section structure of each annular tooth engaged 25 can be acute triangle.
It may insure the fastness connected between suspension assembly 2 and casing 9 by the way that multiple annular tooth engageds 25 are arranged.
In order to realize that the mortar containing gravel is entered in gravel packing zone 7 by tubing string, thus just need to contain gravel
The mortar lifting of stone is for filling channel.By opening up the second through-hole 223 on the second tube body 22, opened up on the first tube body 21 and gravel
The third through-hole 211 that stone filling layer 7 is connected to is connected to the second through-hole using the first connecting tube 23 for being located at first annular space 26
223 and third through-hole 211, can entering gravel packing zone 7 from the second tube body 22 for the mortar containing gravel, to provide circulation logical
Road.
And in stowing operation, the mortar containing gravel only needs to be trapped in gravel and sand in gravel packing zone 7, mortar
In liquid need timely to return and discharge, just can ensure that the filling of enough gravels and sand, thus need to the liquid in mortar
Body is excluded, and provides reflux channel for liquid.By offering first through hole 222 on the second tube body 22, so that liquid is logical
Cross sand retention pipe 4 fluid hole 41 enter the second annular space 8 after, enter in oscillation component 5, after flowing through oscillation component 5,
It can be flowed into first annular space 26, casing 9 is entered back by first annular space 26 and bored by first through hole 222
In third annular space 10 between bar string 1, from 10 reflux of third annular space to ground.
In order to ensure above-mentioned filling channel and reflux channel have enough circulations, optionally, of first through hole 222
Number can be three, and uniformly be provided with the ring week of the second tube body 22, that is to say, that the number in reflux channel is three, it is ensured that
Liquid has enough channels to carry out reflux；The number of second through-hole 223, third through-hole 211 and the first connecting tube 23 is three
It is a, and three the second through-holes 223 are uniformly provided with the ring week of the second tube body 22, correspondingly, the number for filling channel is also three
It is a, to ensure that the mortar containing gravel has enough channels to enter in gravel packing zone 7.
Since suspension assembly 2 will not only provide the channel that the mortar containing gravel enters gravel packing zone 7, but also to provide
The reflux channel of liquid in mortar, in order to avoid interacting between two channels, thus needs to be arranged check valve 3, wherein on
The side that filling channel can be located at check valve 3 is stated, reflux channel is located at the other side of check valve 3.
Optionally, when tubing string is installed, check valve 3 can be fixed on the second tube body 22 by shear pin (not shown)
It is interior；
Shear pin is located at the second side of the through-hole 223 far from step 221, and wherein check valve 3 is initial after being lowered into well
The location drawing is as shown in Figure 1.
By suppressing from rod string 1 into the second tube body 22, shear pin can be cut, and check valve 3 can be in the second tube body
Sliding, under the action of suppressing, sets on step 221, as shown in Figure 2 or Figure 3, when check valve 3 is set in step 221 in 22
When upper, filling channel is located at check valve 3 close to the side of rod string 1, and reflux channel is located at one of check valve 3 far from rod string 1
Side.
It will be appreciated by persons skilled in the art that being injected into the mortar containing gravel of the second tube body 22 from rod string 1
Pressure of pressure when being greater than the liquid reflux isolated from mortar, thus check valve 3 in gravel-packing process always
It is in close state.
For sand retention pipe 4, sand retention pipe 4 may be implemented for gravel and sand to be blocked in gravel packing zone 7.
Optionally, sand retention pipe 4 includes the sub- pipe 42 of multiple sand blocks and multiple third connecting tubes 43；
It is connected between the adjacent sub- pipe 42 of two sand blocks by a third connecting tube 43, is opened up on each sub- pipe 42 of sand block
There is fluid hole 41, as shown in Fig. 1 or Fig. 2 or Fig. 3.
Since the long well section gravel pack completion tubing string of the embodiment of the present invention is suitable for long well section, and general sand block pipe
42 length is 30-50m, and therefore, it is necessary to the sub- pipes 42 of multiple sand blocks to form sand retention pipe 4, ability using the series connection of third connecting tube 43
Meet long well section gravel pack completion.
Further, in order to ensure the liquid in mortar can be flowed out from gravel packing zone 7, in the sub- pipe 42 of each sand block
On offer fluid hole 41.Since the diameter of the sand in mortar is generally 0.4mm, in order to prevent in mortar sand along with liquid from
It is flowed out in fluid hole 41, the value range in the aperture of fluid hole 41 can be 0.15-0.2mm.
It, can using the oscillation action since oscillation component 5 can drive tubing string to realize oscillation for oscillation component 5
To prevent the deposition of gravel or sand in gravel packing zone 7, thus oscillation component 5 also belongs to the long well of the embodiment of the present invention
The critical piece of section gravel pack completion tubing string.
Optionally, oscillation component 5 includes multiple oscillating tubes 51 and multiple second connecting tubes 52, two adjacent oscillating tubes 51
Between be connected by second connecting tube 52, as shown in Fig. 1 or Fig. 2 or Fig. 3.
It is understood that the length of an oscillating tube 51 is 30-50m, in order to meet the needs of long well section, needing will be more
A oscillating tube 51 is used in series, and multiple oscillating tubes 51 are used in series, and can further enhance the oscillation action to tubing string entirety.
Optionally, it is provided with axially eccentric blade (not shown) in each oscillating tube 51, axially eccentric blade is used for
Liquid by driving the tube body of oscillating tube 51 to vibrate at that time.
For guide part 6, guide part 6 primarily serves the effect of guiding, and shape can be semi-round ball shape or circular cone
Shape.
Based on above structure, the installation for the ease of the long well section gravel pack completion tubing string of the embodiment of the present invention is connected,
Optionally, the first tube body 21 can be connected through a screw thread with sand retention pipe 4, and sand retention pipe 4 can be connected through a screw thread with guide part 6,
Each oscillating tube 51 can be connected through a screw thread with the second adjacent connecting tube 52, and each sub- pipe 42 of sand block can be with adjacent
Three connecting tubes 43 are connected through a screw thread.
Optionally, annular closeouts 24 are connected with the outer tube wall of the second tube body 22；It is arranged on the outer wall of annular closeouts 24
There is internal screw thread, internal screw thread is suitable for cooperating with the external screw thread being provided on the inner wall of the first tube body 21, when annular 24 tripping in of closeouts
When at where to the external screw thread, tubing string rotation can be driven by rotary drill rod string 1, is realized using annular closeouts 24 preliminary
It is screwed, recycles the mode suppressed, realize further fixing between suspension assembly 2 and casing 9.
It optionally, can be by rotating tubing string, so that annular closeouts 24 and the first tube body 21 after completing gravel filling
Threaded connection release, then above mention rod string 1, part tubing string recycled, only there are well casing column is partially stayed, as shown in Figure 4.
In conclusion long well section gravel pack completion tubing string provided in an embodiment of the present invention, including rod string 1, suspension group
Part 2, check valve 3, sand retention pipe 4, oscillation component 5 and guide part 6.The suspension assembly 2 include the first tube body 21, the second tube body 22,
First connecting tube 23, annular closeouts 24 and multiple annular tooth engageds 25；Rod string 1, the second tube body 22 and oscillation component 5 are successively
It is connected, oscillation component 5 vibrates when passing through in it for liquid；First tube body 21, sand retention pipe 4 are connected with guide part 6.?
It after the long well section gravel pack completion tubing string is lowered into net horizontal section to be filled, is suppressed into rod string 1, so that multiple annulars
Tooth engaged 25 is connected with the cooperation of the inner wall of casing 9, and check valve 3 is set on step 221；Again by the mortar containing gravel from drilling rod
Injection in string 1, the mortar containing gravel are entered in gravel packing zone 7 by rod string 1 and filling channel, are filled to gravel
Layer 7 carries out gravel filling, and simultaneously, the liquid in mortar can enter the second annular by the fluid hole 41 on sand retention pipe 4
In space 8, and when by the inside of oscillation component 5, it may make oscillation component 5 that tubing string is driven to vibrate, prevent gravel from existing
Deposition occurs in stowing operation, so that gravel packing zone 7 fills closely knit, and then liquid passes through reflux channel again and enters
In one annular space 26, it is flowed into third annular space 10 from first annular space 26, is returned by third annular space 10 again
It is discharged to ground；When the pressure in rod string 1 is gradually increasing, stops injecting the mortar containing gravel into rod string 1, terminate gravel
Stone filling.The long well section gravel pack completion tubing string has substantially ensured that long well section gravel fills using the oscillation action of oscillation component 5
The compactness of packing course 7 improves long well section gravel packing effectiveness, ensure that sand control completion efficiency.
The embodiment of the invention also provides a kind of process of long well section gravel pack completion, this method is applied to above-mentioned
Long well section gravel pack completion tubing string in embodiment.The flow chart of this method is as shown in Figure 5, comprising:
Step 501: long well section gravel pack completion tubing string is lowered into net horizontal section to be filled.
In embodiments of the present invention, net horizontal section dig a well after the completion of, can measure in advance net horizontal section size and
The size of casing 9, for example, the length of net horizontal section, height etc. of the internal diameter and net horizontal section of net horizontal section apart from ground.Base
In the size of the net horizontal section, all parts for meeting the tubing string of size of the net horizontal section to be filled are designed, and carry out
Installation.After installation is complete, which is lowered into net horizontal section to be filled, as shown in Figure 1.
Step 502: being suppressed into rod string 1, multiple annular tooth engageds 25 are connected with the cooperation of the inner wall of casing 9, check valve 3
It sets on step 221.
By being suppressed into rod string 1, since suspension assembly 2 receives down the effect of the pressure pushed away, so that the first pipe
Multiple annular tooth engageds 25 on 21 outer wall of body can be moved to net horizontal section direction, bite the inner wall of casing 9.It can manage
The hardness of solution, annular tooth engaged 25 is greater than the hardness of 9 tube wall of casing, thus is snapped on casing 9 in annular tooth engaged 25
Later, the first tube body 21 can be made to be fixed as one with casing 9.
Continue to suppress to high pressure, under the effect of the pressure, the shear pin of fixed check valve 3 can be cut, and check valve 3 can be with
It away from the direction movement of rod string 1, and then sets on step 221, so that filling channel is opened, for gravel in next step
Filling is prepared.
Step 503: the mortar containing gravel is injected out of rod string 1, gravel filling is carried out to gravel packing zone 7, and
In the liquid of ground recycling reflux；
The mortar containing gravel is injected out of rod string 1 using the note sand equipment on ground, the mortar containing gravel can be with
It is entered in the second tube body 22 into rod string 1 is crossed, under the barrier action of check valve 3, enters first by the second through-hole 223
In connecting tube 23, after the first connecting tube 23, entered in gravel packing zone 7 from third through-hole 211, to gravel packing zone 7
It is filled.
During gravel filling, the liquid in mortar can be flowed out from the fluid hole 41 of sand retention pipe 4, enter by
In the second annular space 8 formed between sand retention pipe 4, guide part 6 and oscillation component 5, since the closure of annular closeouts 24 is made
With so that liquid in the second annular space 8 can only be by being flowed into oscillation component 5, after through oscillation component 5, by the
The outflow of one through-hole 222 is flowed into the first annular space 26 that the first tube body 21 and the second tube body 22 are constituted, from first annular sky
Between 26 be flowed into third annular space 10 again, then reflux is recycled to ground.
Step 504: when the pressure in rod string 1 is gradually increasing, stopping injecting the sand containing gravel into rod string 1
Slurry.
It is understood that the mortar containing gravel can not enter back into gravel and fill after the filling of gravel packing zone 7 is full
In packing course 7, at this point, the pressure in tubing string can gradually rise, that is, can be gradually increasing by the pressure that rod string 1 measures, because
And stop injecting the mortar containing gravel into rod string 1, terminate gravel filling.
In alternatively possible implementation, other than above-mentioned steps 501-504, this method can also include:
Step 505: above mentioning rod string 1, rod string 1, the second tube body 22 and oscillation component 5 are played into producing well.
After completing gravel filling, as shown in fig. 6, after by rotation several circles of tubing string, so that annular tooth engaged 25 and set
Pipe 9 separates, then above mentions rod string 1, will propose oil well on rod string 1, the second tube body 22 and oscillation component 5 this part tubing string, the
One tube body 21, sand retention pipe 4 and guide part 6 are trapped in net horizontal section, are realized to long well section gravel pack completion operation.
It should be noted that the principle of the process of above-mentioned long well section gravel pack completion can refer to long well above-mentioned
The embodiment of the structure description of section gravel pack completion tubing string, details are not described herein.
In the present invention, term " first ", " second " and " third " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of long well section gravel pack completion tubing string, which is characterized in that the tubing string includes: rod string (1), suspension assembly
(2), check valve (3), sand retention pipe (4), oscillation component (5) and guide part (6), wherein
The suspension assembly (2) includes the first tube body (21), the second tube body (22), the first connecting tube (23), annular closeouts
(24) and multiple annular tooth engageds (25)；Second tube body (22) is located in first tube body (21), second tube body
(22) it is formed between first tube body (21) first annular space (26), the annular closeouts (24) are located at described the
In one annular space (26), and the side for blocking the first annular space (26)；Setting in second tube body (22)
Have step (221), the position of the second tube body (22) corresponding to the step (221) and the annular closeouts (24) are corresponding
The second tube body (22) position between second tube body (22) on offer first through hole (222), the first through hole
(222) it is connected to the first annular space (26)；Second tube body (22) is located at the step (221) far from the annular
It offers the second through-hole (223), is offered on first tube body (21) and gravel packing zone (7) on the side of closeouts (24)
The third through-hole (211) of connection, first connecting tube (23) are located in the first annular space (26), and for being connected to institute
State the second through-hole (223) and the third through-hole (211)；The multiple annular tooth engaged (25) is arranged in first tube body
(21) on outer tube wall；
The rod string (1) is connected with one end of second tube body (22), the other end of second tube body (22) with it is described
Oscillation component (5) is connected, and the oscillation component (5) is vibrated for liquid when passing through out of it；The check valve (3) sets
It sets in second tube body (22), and is suitable for cooperating with the step (221)；
First tube body (21) is connected with one end of the sand retention pipe (4), the other end of the sand retention pipe (4) and the guiding
Part (6) is connected；The second annular space is formed between the sand retention pipe (4), the guide part (6) and the oscillation component (5)
(8), it is offered multiple fluid holes (41) on the sand retention pipe (4), the fluid hole (41) is for being connected to the gravel packing zone
(7) with second annular space (8)；
When the tubing string is configured with, the multiple annular tooth engaged (25) is connected with the cooperation of the inner wall of casing (9), described
Check valve (3) is set on the step (221), the first annular space (26) and described sleeve pipe (9) and the rod string
(1) third annular space (10) connection between.
2. long well section gravel pack completion tubing string according to claim 1, which is characterized in that the check valve (3) passes through
Shear pin is fixed in second tube body (22)；
The shear pin is located at side of second through-hole (223) far from the step (221).
3. long well section gravel pack completion tubing string according to claim 1, which is characterized in that oscillation component (5) packet
Include multiple oscillating tubes (51) and multiple second connecting tubes (52)；
It is connected between the oscillating tube (51) of adjacent two by second connecting tube (52).
4. long well section gravel pack completion tubing string according to claim 3, which is characterized in that each oscillating tube (51)
It is inside provided with axially eccentric blade, the axially eccentric blade passes through the tube body for driving the oscillating tube (51) at that time for liquid
It vibrates.
5. long well section gravel pack completion tubing string according to claim 1, which is characterized in that sand block (4) pipe includes
Multiple sand block pipes (42) and multiple third connecting tubes (43)；
It is connected between the sand block pipe (42) of adjacent two by a third connecting tube (43)；
The fluid hole (41) are offered on each sand block pipe (42).
6. long well section gravel pack completion tubing string according to claim 1, which is characterized in that the first through hole (222)
Number be three；
Three first through hole (222) are uniformly provided with the ring week of second tube body (22).
7. long well section gravel pack completion tubing string according to claim 1, which is characterized in that second through-hole (223),
The number of the third through-hole (211) and first connecting tube (23) is three；
Three second through-holes (223) are uniformly provided with the ring week of second tube body (22).
8. long well section gravel pack completion tubing string according to claim 1, which is characterized in that each fluid hole (41)
The value range in aperture is 0.15-0.2mm.
9. a kind of process of long well section gravel pack completion, which is characterized in that the method is applied to the claims
The described in any item long well section gravel pack completion tubing strings of 1-8, which comprises
The long well section gravel pack completion tubing string is lowered into net horizontal section to be filled；
It is suppressed into the rod string (1), the multiple annular tooth engaged (25) is connected with the cooperation of the inner wall of described sleeve pipe (9),
The check valve (3) sets on the step (221)；
The injection out of the rod string (1) by the mortar containing gravel carries out gravel filling to the gravel packing zone (7), and
In the liquid of ground recycling reflux；
When the pressure in the rod string (1) is gradually increasing, it is described containing gravel to stop the injection into the rod string (1)
Mortar.
10. the process of long well section gravel pack completion according to claim 9, which is characterized in that described when described
When pressure in rod string (1) is gradually increasing, stop injecting into the rod string (1) after the mortar containing gravel,
The method also includes:
The rod string (1) is above mentioned, the rod string (1), second tube body (22) and the oscillation component (5) are risen fuel-displaced
Well.
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| CN201910381756.8A CN110017122B (en) | 2019-05-08 | 2019-05-08 | Long well section gravel packing well completion pipe string and process method |
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|---|---|---|---|
| CN201910381756.8A CN110017122B (en) | 2019-05-08 | 2019-05-08 | Long well section gravel packing well completion pipe string and process method |
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| CN110017122B CN110017122B (en) | 2021-01-01 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375661A (en) * | 1993-10-13 | 1994-12-27 | Halliburton Company | Well completion method |
| CN2473332Y (en) * | 2001-02-23 | 2002-01-23 | 中国石化胜利油田有限公司采油工艺研究院 | Self powered vibration filling tool |
| US20030111224A1 (en) * | 2001-12-19 | 2003-06-19 | Hailey Travis T. | Apparatus and method for gravel packing a horizontal open hole production interval |
| CN1766282A (en) * | 2005-09-30 | 2006-05-03 | 中国石化胜利油田有限公司采油工艺研究院 | Sand-proof hydraulic vibrating apparatus for high density filling |
| CN101370902A (en) * | 2005-11-22 | 2009-02-18 | 哈利伯顿能源服务公司 | Methods of consolidating unconsolidated particulates in subterranean formations |
| CN103109033A (en) * | 2010-07-01 | 2013-05-15 | 弗莱克斯钻孔有限公司 | Radial vibrational apparatus |
| CN103688015A (en) * | 2010-12-17 | 2014-03-26 | 埃克森美孚上游研究公司 | Wellbore apparatus and methods for multi-zone well completion, production and injection |
-
2019
- 2019-05-08 CN CN201910381756.8A patent/CN110017122B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375661A (en) * | 1993-10-13 | 1994-12-27 | Halliburton Company | Well completion method |
| CN2473332Y (en) * | 2001-02-23 | 2002-01-23 | 中国石化胜利油田有限公司采油工艺研究院 | Self powered vibration filling tool |
| US20030111224A1 (en) * | 2001-12-19 | 2003-06-19 | Hailey Travis T. | Apparatus and method for gravel packing a horizontal open hole production interval |
| CN1766282A (en) * | 2005-09-30 | 2006-05-03 | 中国石化胜利油田有限公司采油工艺研究院 | Sand-proof hydraulic vibrating apparatus for high density filling |
| CN101370902A (en) * | 2005-11-22 | 2009-02-18 | 哈利伯顿能源服务公司 | Methods of consolidating unconsolidated particulates in subterranean formations |
| CN103109033A (en) * | 2010-07-01 | 2013-05-15 | 弗莱克斯钻孔有限公司 | Radial vibrational apparatus |
| CN103688015A (en) * | 2010-12-17 | 2014-03-26 | 埃克森美孚上游研究公司 | Wellbore apparatus and methods for multi-zone well completion, production and injection |
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|---|---|
| CN110017122B (en) | 2021-01-01 |
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